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- Title
Improving Zinc-Ion Batteries' Performance: The Role of Nitrogen Doping in V 2 O 3 /C Cathodes.
- Authors
Lin, He; Cheng, Huanhuan; Zhang, Yu
- Abstract
This study presents the synthesis and electrochemical evaluation of nitrogen-doped vanadium oxide (N−V2O3/C) as a cathode material for aqueous zinc-ion batteries (AZIBs), using a hydrothermal method. Compared to undoped V2O3/C, N−V2O3/C exhibits enhanced electrical conductivity, capacity, and electrochemical kinetics, attributed to the incorporation of pyridinic and pyrrolic nitrogen. The initial charge–discharge cycles indicate phase transitions to amorphous vanadium oxides, enhancing conductivity. N−V2O3/C shows a high specific capacity of 168.4 mAh g−1 at 10 A g−1 and remarkable reversibility, highlighted by the transient existence of intermediate species during cycling. Optimal electrochemical performance is achieved with a vanadium-to-nitrogen molar ratio of 2:3, indicating the significant impact of the nitrogen doping concentration on the material's efficiency. This work underscores the potential of N−V2O3/C as a superior cathode material for AZIBs.
- Subjects
CATHODES; VANADIUM oxide; ELECTRIC conductivity; NITROGEN; DOPING agents (Chemistry); STORAGE batteries; VANADIUM; GLOW discharges
- Publication
Inorganics, 2024, Vol 12, Issue 4, p117
- ISSN
2304-6740
- Publication type
Article
- DOI
10.3390/inorganics12040117